Collet chuck for collets 5C is a replaceable tooling for high-precision metalworking on turning equipment manufactured by JET. The chuck is designed to work with 5C collets. Collets are designed to accommodate special cutting and grinding tools. The chuck is installed on BD-920G and BD-11W lathes, providing high-precision turning work. As a result of the installation of the chuck on the spindle, using radial screws, a high precision of workpiece installation is achieved, in accordance with the axis of rotation of the spindle.